10-144-243 Me. Code R. § 1002.0

Current through 2024-51, December 18, 2024

Section 144-243-1002.0 - WATER USE RECORDS

1002.1Water meter records: The design flow may be calculated by actual water meter readings, provided the following procedures are used:

1002.1.1Acceptable records: Copies of billing records of the service provider or from water meters certified to be accurate within 2% by the water district;

1002.1.2One year minimum: Continuous records over the period of at least one year (or other period acceptable to the Department);

1002.1.3Like establishments: Records from the applicant's demonstrated use of the facilities or from two or more like establishments.

1002.2Adjustments for peak days: The average daily flows shall be adjusted for peak flow days as follows:

1002.2.1Daily monitoring: If water meter records are recorded on a daily basis, the day with largest recorded wastewater flow shall be used for the design flow. If an applicant believes that the day with the highest flow is inappropriate, supporting data shall be submitted to the Department for review and approval.

1002.2.2Weekly monitoring: If water meter records are recorded on a weekly basis, the design flow shall be calculated by dividing the highest weekly flow by the number of days the facility was in use during the week with the highest flow and then multiplying by 1.2. If an applicant believes a 1.2 multiplying factor is inappropriate, supporting data shall be submitted to the Department for review and approval.

1002.2.3Monthly monitoring: If water meter records are recorded on a monthly basis, the design flow shall be calculated by dividing the highest monthly flow by the number of days the facility was in use during the month with the highest flow and then multiplying by 1.5. If an applicant believes a 1.5 multiplying factor is inappropriate, supporting data shall be submitted to the Department for review and approval.

1002.2.4Quarterly monitoring: If water meter records are recorded on a quarterly basis, the design flow shall be calculated by dividing the highest quarterly flow by the number of days the facility was in use during the quarter with the highest flow and then multiplying by 2.0. If an applicant believes a 2.0 multiplying factor is inappropriate, supporting data shall be submitted to the Department for review and approval.

1002.3Adjustments for Nonresidential Effluent Quality: Facilities other than residential, using water records to determine design flows must also comply with Section 1002.3.

1002.3.1General: When, as a result of an approved pretreatment technique, the wastewater entering an onsite sewage disposal field has a combined 5-day biochemical oxygen demand (BOD⁵) and total suspended solid (TSS) concentration of less than 175 milligrams per liter, the lot size required may be adjusted by multiplying by the adjustment factors prescribed in Table 2. When the combined BOD⁵ and TSS are greater than 320 milligrams per liter, the size of the lot shall be adjusted, again using Table 2.

TABLE 1

Design flows for nonresidential facilities

NOTE: The design flows calculated in this table represent the design flow solely for purposes of determining the minimum lot size requirements for uses other than single family residences

Important: See note 1 at end of Table 1.

Type of facility	Design flow per user or unit
Airports	5 gpd per passenger plus 15 gpd per employee [1]
Assembly areas	2 gpd per seat
Bakery	100 gpd per bakery plus 15 gpd per employee [1]
Barber shop	100 gpd per chair
Beauty salon	100 gpd per chair
Bed and breakfast	225 gpd per establishment and 75 gpd per rental room
Boarding houses with meals	225 gpd per house plus 50 gpd per boarder
Bottle club	10 gpd per seat
Bunkhouses	20 gpd per bed
Bus service areas	5 gpd per passenger plus 15 gpd per employee [1]
Butcher shop or department	100 gpd per shop plus 15 gpd per employee [1]
Cafeteria, open general public	30 gpd per seat plus 15 gpd per employee [1]
Cafeteria, private	15 gpd per seat plus 15 gpd/employee [1]
Campground sites served by central toilets	60 gpd per site and includes dump station
Campground sites served by individual water and sewer hookups	75 gpd per site
Campground dump station	10 gpd per site for each trailer site not served by individual water and sewer hookups
Campground park model trailer sites	125 gpd per site
Children's camps, day use only	15 gpd per camper plus 15 gpd per staff person
Children's camps, day and night	20 gpd per camper plus 15 gpd per staff person
Churches	4 gpd per seat for general seating and 8 gpd per seat for seats in a dining area
Dance hall	5 gpd per attendee plus 15 gpd per employee [1]
Day care facilities serving meals	15 gpd per child plus 15 gpd per adult
Day care facilities not serving meals	10 gpd per child plus 15 gpd per adult
Eating Places: Delicatessen, food prepared and no seats	100 gpd per deli or 1 gpd per meal served plus 15 gpd per employee [1] (whichever is larger)
Delicatessen, no food prepared and no seats	50 gpd per deli plus 15 gpd per employee [1]
Drive-in, no full meals and no china service	30 gpd per car space plus 15 gpd/ employee [1]
Eating place, fast food, no seats, no full meals, and no china service	100 gpd or 1 gpd per meal served plus 15 gpd per employee [1] (whichever is larger)
Eating place, fast food, no full meals, and no china service	20 gpd per inside seat plus 7 gpd per outside seat plus 15 gpd/ employee [1]
Ice Cream Stands, ice cream only with no seats	150 gpd per stand plus 15 gpd per employee. [1]
Restaurant, one or two meals per day (e.g. breakfast and lunch)	20 gpd per indoor seat plus 7 gpd/outdoor seat plus 15 gpd per employee [1]
Restaurant, three or more meals per day (e.g. breakfast, lunch, and dinner)	30 gpd per indoor seat plus 10 gpd per outdoor seat plus 15 gpd/employee [1]
Employees at place of employment with no showers	15 gpd per employee [1]
Employees at place of employment with showers	20 gpd per employee [1]
Fairgrounds	2 gpd per attendee based on average daily attendance
Gyms, not associated with schools	10 gpd per participant plus 3 gpd per spectator plus 15 gpd per employee [1]
Health clubs	10 gpd per participant plus 3 gpd per spectator plus 15 gpd per employee [1]
Hospitals	150 gpd per bed plus 15 gpd per employee [1]
Hotels and motels with shared baths	80 gpd per bedroom plus 15 gpd per employee [1]
Hotels and motels with private baths	100 gpd per bedroom plus 15 gpd per employee [1]
Laundry, self-service	600 gpd per machine plus 15 gpd per employee [1]
Marina	100 gpd plus 10 gpd per slip or mooring (clothes washers are not included; design flow for clothes washers shall be calculated separately)
Medical offices, clinics, and dental offices	80 gpd per medical staff plus 5 gpd per patient plus 15 gpd/office employee [1]
Nursing Homes	150 gpd per bed plus 15 gpd per employee [1]
Parks and picnic areas, public rest rooms and no showers	5 gpd per attendee plus 15 gpd per employee [1]
Parks and picnic areas, public rest rooms and showers	10 gpd per attendee plus 15 gpd per employee [1]
Rooming houses, no meals	180 gpd per house plus 30 gpd per roomer
Rental cabins and cottages	50 gpd per bed plus 15 gpd per employee [1]
Rental cabins, housekeeping	50 gpd per cabin, plus 50 gpd per bed
School, elementary	7 gpd per student plus 15 gpd per teacher and other employees [1]
School, junior high	9 gpd per student plus 15 gpd per teacher and other employees [1]
School, high	12 gpd per student plus 15 gpd per teacher and other employees [1]
School, boarding	75 gpd per student plus 15 gpd per teacher and other employees [1]
Service stations	500 gpd per 1st set of fuel pumps plus 300 gpd per each additional set of fuel pumps plus 15 gpd per employee [1]
Shopping centers or stores, public rest rooms and showers	400 gpd per water closet plus 20 gpd per shower plus 15 gpd per employee [1] Design flows for any eating places or butcher shops shall be determined and added to total design flow.
Shopping centers or stores, no public rest rooms	1 gpd per parking space plus 15 gpd per employee [1] Design flows for any eating places or butcher shops shall be determined and added to total design flow. NOTE: Title 22 MR.S.A. § 270 requires a public rest room for shopping centers containing 6 or more separate retail establishments
Sports Bars	20 gpd per seat plus 15 gpd per employee [1]
Taverns/Bars (including but not limited to, pubs, billiard halls, etc.)	10 gpd per seat plus 15 gpd per employee [1]
Tennis and racquetball courts	300 gpd per court plus 15 gpd per employee 1 Design flows for any eating places shall be determined and added to the total design flow
Visitors center	6 gpd per visitor plus 15 gpd/ employee (This includes libraries, museums, similar uses) [1]

NOTES:

[1.] The design flow for employees is based on the total number of employees present in any 24-hour period.

TABLE 2

ADJUSTMENT FACTOR FOR WASTEWATER STRENGTHS DIFFERENT FROM TYPICAL DOMESTIC WASTEWATER

Strength of wastewater entering the disposal field (BOD5 plus TSS)	Adjustment factor(AF)
30 or less milligrams/liter	0.5
52	0.6
82	0.7
122	0.8
175	0.9
240	1.0
320	1.1
420	1.2
530	1.3
660	1.4
810	1.5
985	1.6
1180	1.7
1400	1.8
1645	1.9
1920	2.0

10-144 C.M.R. ch. 243, § 1002.0